AXON F-139 BTE Hearing Aid Sound Amplifier Medical Hearing Device Enhancement Deaf Aid

AXON F-139 BTE Hearing Aid Sound Amplifier Medical Hearing Device Enhancement Deaf Aid

Specifications:
Mini BTE Hearing aid
Max Sound Output: 129dB ± 4dB
Max Sound Gain: 50dB ± 5dB
Harmonic Wave Distortion: ≤5%
Frequency Range: 450~3500 Hz
Input Noise:  ≤30 dB
Battery: AG13  (Without Battery)
Working Voltage: dc1.5V
Working Current: ≤4 mA
Color: As the picture shows
Item Size: 5.3 x 4.4 x 1.0cm
Package Size: 9.4 x 7.2 x 3.2cm
Net Weight: 8g

Note
Adjust volume to the minimum before wearing.
Choose an earplug of slightly bigger size to avoid whistler.
Increase volume gradually to avoid sudden increase in sound.
If you hear a howling, check the ear (silica gel) is appropriate and whether the size of the plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage.
Keep the ear plug clean
Remove the battery if you don’t use it for a long time.

Package includes:
1 x F-139 Hearing aid
3 x Earplug (different sizes)
2 x AG13 button cell battery  (Without Battery)
1 x User manual
1 x Box